Patents by Inventor Fumio Sodeyama

Fumio Sodeyama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Primer compositions
    Patent number: 4883834
    Abstract: A primer composition usable for steel sheet and plastic sheet in vehicle bodies consists essentially of a component A composed of a resin obtained by graft-polymerizing a styrene-butadiene-styrene block copolymer or its hydrogenated polymer with .alpha.,.beta.-unsaturated carboxylic acid or its anhydride, a component B of a crosslinking agent and a component C of an epoxy compound, and has particular weight ratios as solid content of component A to component B and components A+B to component C.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: November 28, 1989
    Assignee: Nippon Oil and Fats Company, Limited
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta
  • Primer compositions
    Patent number: 4874818
    Abstract: A primer composition usable for steel sheet and plastic sheet in vehicle bodies consists mainly of a polycaprolactone graft polymer obtained by graft-polymerizing a styrene-butadiene-styrene block copolymer or its hydrogenated polymer with a ring-opened polymer of .epsilon.-caprolactone and having a grafting ratio of the ring-opened polymer within a range of 0.5.about.50% by weight.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: October 17, 1989
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Shosaku Yamamoto, Kazuo Kakinuma, Hiroshi Ishioka, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta